气象与环境学报2012，Vol.28Issue(4)：73-78,6.
德清县雷电时空分布特征及雷击灾害风险区划
Temporal and spatial distributions of thunder and lightning and risk division of thunder stroke disaster in Deqing County,Zhejiang province
摘要
Abstract
Based on the ground lightning data from 2007 to 2010,the density map of ground lightning was drawn by a grid method.The variation of thunderstorm days was analyzed based on the corresponding data in the recent 40 years and risk division of thunder stroke disaster was estimated.The results indicate that the thunderstorm days from 1970s to 1980s are more than those in 1990s and after 2000.The thunderstorm days are in a decreasing trend from 1971 to 2000,while it is in a increasing trend after 2000.There exists thunderstorm in each month except in December,especially in July and August.The thunderstorm occurs mostly in spring and summer,then in autumn,and it is seldom in winter.The thunder and lightning often happens from 12:00 to 13:00 and from 15:00 to 16:00.By 2010,the density of ground lightning is more than 4 times per square kilometer in most areas of Deqing County.The falling areas of dense thunderstorm increases yearly,the high-density area has a diffusion trend to mountain area and the northeast towns.The falling area of thunderstorm has a close relation with topography,and the high-density area is located in the northwest mountain area with the high altitude and in the low slope foothill with the altitude of 50-200 m.The high risk areas of thunder stroke disaster are from Moganshan to Duihekou regions of Deqing County,in the junction of the north of Wukang,Luoshe and Zhongguan and in the southwest of Leidian of Deqing County.关键词
雷电/地闪密度/风险区划/德清县Key words
Thunder and lightning/Ground lightning density/Risk division/Deqing County分类
天文与地球科学引用本文复制引用
顾丽华,蔡云泉,李嘉鹏,李利松,万奎..德清县雷电时空分布特征及雷击灾害风险区划[J].气象与环境学报,2012,28(4):73-78,6.基金项目
浙江省气象局重点科技项目（2008ZD09）“气象灾害防御规划的编制与研究”资助 （）
